Nitrate of an element of alkali metal group, decomposes on heating, gives brown colour gas. Nitrate and brown colour gas are respectively:-

Options

A. `NaNO_(3)` and `NO`
B. `LiNO_(3)` and `NO_(2)`
C. `KNO_(3)` and `NH_(3)`
D. `NaNO_(3)` and `NO_(2)`

Answer

B

Explanation

Only `LiNO_(3)` produces red brown vapours of `NO_(2)`